package com.zzyl.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.crypto.digest.BCrypt;
import cn.hutool.json.JSONUtil;
import com.zzyl.constant.CacheConstant;
import com.zzyl.constant.Constants;
import com.zzyl.constant.SuperConstant;
import com.zzyl.dto.LoginDto;
import com.zzyl.entity.Resource;
import com.zzyl.entity.User;
import com.zzyl.enums.BasicEnum;
import com.zzyl.exception.BaseException;
import com.zzyl.mapper.ResourceMapper;
import com.zzyl.mapper.UserMapper;
import com.zzyl.properties.JwtTokenManagerProperties;
import com.zzyl.properties.SecurityConfigProperties;
import com.zzyl.service.LoginService;
import com.zzyl.utils.JwtUtil;
import com.zzyl.utils.ObjectUtil;
import com.zzyl.vo.UserVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.ValueOperations;
import org.springframework.stereotype.Service;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * @FileName LoginServiceImpl
 * @Description
 * @Author Sword
 * @date 2025-10-10
 **/

@Service
public class LoginServiceImpl implements LoginService {

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private JwtTokenManagerProperties jwtTokenManagerProperties;

    @Autowired
    private SecurityConfigProperties securityConfigProperties;

    @Autowired
    private ResourceMapper resourceMapper;

    @Autowired
    private RedisTemplate<String, String> redisTemplate;


    /**
     * 用户登录
     *
     * @param loginDto
     * @return
     */
    @Override
    public UserVo login(LoginDto loginDto) {

        //根据用户名查询用户
        User user = userMapper.getByUserName(loginDto.getUsername());

        //判断用户是否存在
        if (ObjectUtil.isEmpty(user)) {
            throw new BaseException(BasicEnum.LOGIN_FAIL);
        }

        //判断用户是否禁用
        if (user.getDataState().equals(SuperConstant.DATA_STATE_1)) {
            throw new BaseException(BasicEnum.ACCOUNT_DISABLED);
        }

        //判断密码是否正确
        if (!BCrypt.checkpw(loginDto.getPassword(), user.getPassword())) {
            throw new BaseException(BasicEnum.INCORRECT_PASSWORD);
        }

        //密码脱敏
        user.setPassword("");

        UserVo userVo = BeanUtil.copyProperties(user, UserVo.class);

        //获取白名单url
        List<String> publicAccessUrls = securityConfigProperties.getPublicAccessUrls();

        //查询用户对应资源列表
        List<Resource> resources = resourceMapper.listByUserId(user.getId());

        List<String> urlList = resources.stream().map(Resource::getRequestPath).collect(Collectors.toList());

        //合并 url
        urlList.addAll(publicAccessUrls);

        Map<String, Object> claims = new HashMap<>();
        claims.put("currentUser", JSONUtil.toJsonStr(userVo));

        //生成JWT令牌
        String token = JwtUtil.createJWT(
                jwtTokenManagerProperties.getBase64EncodedSecretKey(),
                jwtTokenManagerProperties.getTtl(),
                claims
        );

        //将urlList存入redis
        ValueOperations<String, String> forValue = redisTemplate.opsForValue();

        int ttl = jwtTokenManagerProperties.getTtl() / 1000;

        forValue.set(CacheConstant.PUBLIC_ACCESS_URLS + user.getId(), JSONUtil.toJsonStr(urlList), ttl, TimeUnit.SECONDS);

        userVo.setUserToken(token);

        return userVo;
    }
}
